Usually almost all the mental disorders have more chances to develop if there are any kind of traumas in the childhood. So yes, it can be related to your ED.
In our case, some of our traumas are related to eating (eating too much/being told to eat/not being allowed to eat). The alters who hold those traumas have an ED - mainly Patricia who has ED-NOS.
I don't think all the therapists are like that... I'd keep trying until I'd find a great T.
Cheers,
Lana
Lifelies